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3 years ago

How do you balance these equations?

Chemistry

1 answer:

uysha [10]3 years ago

8 0

Answer:

1Al₄C₃ + 12H₂O → 3CH₄ + 4Al(OH)₃

Explanation:

SOLUTION :-

Balance it by using 'hit & trial' method , and you'll get the answer :-

1Al₄C₃ + 12H₂O → 3CH₄ + 4Al(OH)₃

VERIFICATION :-

In reactant side of equation :-

Number of atoms in Al = 1×4 = 4
Number of atoms in C = 1×3 = 3
Number of atoms in H = 12×2 = 24
Number of atoms in O = 12×1 = 12

In product side of equation :-

Number of atoms in C = 3×1 = 3
Number of atoms in H = (3×4) + 4(1×3) = 24
Number of atoms in Al = 4×1 = 4
Number of atoms in O = 4(1×3) = 12

Number of atoms of each element is equal in both reactant & product side of equation. Hence , the equation is balanced.

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exactly 5.00 L of air at -50.0 °C is warmed to 100.0 °C. What is the new volume if the pressure remains constant?

ollegr [7]

Answer:

V₂ = 8.36 L

Explanation:

Given data:

Initial volume of gas = 5.00 L

Initial temperature = -50.0°C (-50 + 273 = 223 k)

Final temperature = 100°C (100+273 = 373 k)

Final volume = ?

Solution:

The given problem will be solve through the Charles Law.

According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.

Mathematical expression:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

V₂ = V₁T₂/T₁

V₂ = 5.00 L × 373 K / 223 K

V₂ = 1865 L.K / 223 K

V₂ = 8.36 L

3 0

3 years ago

Balance the word equation then determine the sum of all coefficients.

Minchanka [31]

The sum of all coefficients = 7

<h3>Further explanation</h3>

Given

The word equation

Required

The sum of all coefficients

Solution

The chemical equation can be expressed in terms of:

word equation
skeleton equation
balanced equation

Convert the word equation into a chemical equation(skeleton) :

Ga + Cl₂ → GaCl₃

Balanced equation

2Ga + 3Cl₂ → 2GaCl₃

The sum of all coefficients :

= 2+3+2

= 7

7 0

3 years ago

Help i’ll give u points

Bond [772]

Answer:

60ug

Explanation:

If it has experienced two half lives, that means it has been halved twice. in that case, to undo it, just multiply it by two twice. 0.15ug * 2 = 0.30ug. 0.30ug * 2 = 0.60ug. Hope this helps.

8 0

3 years ago

15 moles of an ideal gas at STP has a volume of ____liters

S_A_V [24]

Answer:

A. 336 L

Explanation:

STP is 0 °C and 1 bar.

At STP, the molar volume of a gas is 22.71 L.

Volume = 15 mol × 22.71 L/mol

Volume = 341 L

===============

The above answer is not in your list of options.

It appears that you are using the OLD (pre-1982) definition of STP, at which the molar volume of a gas is 22.4 L.

Then

V = 15 mol × 22.4 L/mol = 336 L

4 0

3 years ago

List three branches life Science and describe what studied in each?

Mama L [17]

Answer:

First off Life sciences are anything concerned with the study of a living organisms. So ones that would be included would be, microbiology biology, botany, zoology, ecology, genetics and medicine, from what the dictionary states

Explanation:

Biology is the natural science that studies life and living organisms. Which also includes molecular interactions, including their physical structure.

Genetics, is the study of heredity and or the variation of inherited characteristics that we get from family.

Microbiology, is the branch of science which deals with microorganisms.

Let me know if this helps, if not I'll continue researching.

3 0

4 years ago